Contamination features and health risk of soil heavy metals in China

Chen, Haiyang; Teng, Yanguo; Lu, Sijin; Wang, Yeyao; Wang, Jinsheng

doi:10.1016/j.scitotenv.2015.01.025

Cited by 1,185 publications

(494 citation statements)

References 40 publications

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“…Notably, because common modes of action are shared by metal and antibiotic resistance, there is growing concern that metal stress in the environment may function as a coselection agent in the selection and spread of antibiotic resistance genes (ARGs) (BakerAustin et al, 2006;Seiler and Berendonk, 2012). Considering the alarming anthropogenic levels of metal pollution in the environment (Charlesworth et al, 2011;Chen et al, 2015), it is of particular concern that metal contamination can exert a longstanding and widespread coselection pressure for antibiotic resistance of both environmental and clinical importance through genetic couplings (Baker-Austin et al, 2006), for example, coresistance (close linkage between two or more different resistance genes), cross-resistance (single genetic element performing both antibiotic and metal resistance) and coregulation (shared regulatory system to antibiotic and metal resistance).…”

Section: Introductionmentioning

confidence: 99%

Co-occurrence of antibiotic and metal resistance genes revealed in complete genome collection

2016

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The high frequency of antibiotic resistance is a global public health concern. More seriously, widespread metal pressure in the environment may facilitate the proliferation of antibiotic resistance via coselection of antibiotic resistance genes (ARGs) and metal resistance genes (MRGs). Given the lack of comprehensive understanding of the ARG and MRG coselection, in this study both abundance relationship and genetic linkage between ARGs and MRGs were rigorously investigated by performing a genomic analysis of a large complete genome collection. Many more ARGs were enriched in human-associated bacteria compared with those subjected to less anthropogenic interference. The signatures of ARG and MRG co-occurrence were much more frequent and the distance linkages between ARGs and MRGs were much more intimate in human pathogens than those less human-associated bacteria. Moreover, the co-occurrence structures in the habitat divisions were significantly different, which could be attributed to their distinct gene transfer potentials. More exogenous ARGs and MRGs on the genomes of human pathogens indicated the importance of recent resistance acquisition in resistome development of human commensal flora. Overall, the study emphasizes the potential risk associated with ARG and MRG coselection of both environmental and medical relevance.

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Section: Introductionmentioning

confidence: 99%

Co-occurrence of antibiotic and metal resistance genes revealed in complete genome collection

2016

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“…These ecosystems are based on halophyte plants so a possible contamination could ruin the whole biota. The chosen elements are the most commonly investigated regarding some kind of anthropogenic pollution (Chen et al 2015;Hamdoun et al 2015;Li et al 2015;Rodríguez Martín et al 2015). With respect to the main target of the research, the study area was chosen in a typical alkaline lake system called Lake Fehér, near the city of Szeged, in south Hungary.…”

mentioning

confidence: 99%

Adsorption properties of Ni, Cu, and Zn in young alkaline lake sediments in south Hungary (Lake Fehér, Szeged)

Halmos¹,

Bozsó²,

Pál-Molnár³

2015

Soil & Water Res.

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Halmos L., Bozsó G., Pál-Molnár E. (2015): Adsorption properties of Ni, Cu, and Zn in young alkaline lake sediments in south Hungary (Lake Fehér, Szeged). Soil & Water Res., 10: 244-251.Adsorption properties of Cu, Ni, and Zn in alkaline sediments of Lake Fehér at Szeged (Hungary) were investigated. The effects of pollution of these three chosen phytotoxic elements in sodic sediments were primarily examined. These elements are strongly adsorbed in the soils and sediments with relatively high pH values for a long time without any influence on the geochemical processes. However, the salinization (indicated by the global climate change) of soils and sediments can strongly change the original geochemical status. For the adsorption experiments, the horizons with the highest organic matter contents were selected from two profiles. The pH, electrical conductivity (EC), particle size distribution, carbonate content, quality and quantity of organic matter, and clay mineral content of the selected samples were also determined. Efficiency of the adsorption is reduced in Cu >> Zn > Ni and Cu > Ni >> Zn order based on the calculated maximum and specific adsorption values. The adsorption properties of heavy metals are dependent on the content of soil constituents. The results showed that Cu has the highest but not the same affinity to each of the sorbent materials. Ni is strongly while Zn is less bounded to the organic matter. In most cases the results showed that the most effective fixative soil constituent is carbonate, followed by clay minerals and, last, organic matter regarding to the investigated elements.

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“…According to the soil census data of 2005-2013 in China, the spatial distribution of the total noncarcinogenic risk factors of heavy metals (including cadmium, mercury, lead, chromium, arsenic, copper, zinc, and nickel) in three pathways of oral intake, skin contact, and respiratory inhalation was obtained, which can be seen from Figure 1. For children, 45% of 29 provinces, autonomous regions and municipalities in the mainland of China have a moderate potential noncarcinogenic risk, which did not exceed the acceptable noncarcinogenic risk limits [15].…”

Section: The Chinese National "12th Five-year Plan" For Environmentalmentioning

confidence: 93%

“…However, there is a big difference in land area, function, and characteristics between soil in contaminated sites and urban soil; Figure 1. Spatial distribution of total noncarcinogenic risk factors of heavy metals [15].…”

Section: The Chinese National "12th Five-year Plan" For Environmentalmentioning

confidence: 99%

Heavy Metal in Urban Soil: Health Risk Assessment and Management

Li¹

2018

Heavy Metals

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With the rapid development of industrialization and urbanization in the developing country, quite a few pollutants produced by anthropological activities enter into urban soil. A large area of urban soil was polluted by different kinds of pollutants. There have been many pollution events like itai-itai disease in the whole world, and many people suffered from urban soil pollution. As the place where people are highly concentrated,

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Contamination features and health risk of soil heavy metals in China

Cited by 1,185 publications

References 40 publications

Co-occurrence of antibiotic and metal resistance genes revealed in complete genome collection

Co-occurrence of antibiotic and metal resistance genes revealed in complete genome collection

Adsorption properties of Ni, Cu, and Zn in young alkaline lake sediments in south Hungary (Lake Fehér, Szeged)

Heavy Metal in Urban Soil: Health Risk Assessment and Management

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